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Dispersion models

   
 
 

The Lagrangian dispersion model


For simulating the drift and dispersion the considered substance is represented as a "cloud of particles" (the Lagrangian method) in this model. The particles drift under the influence of the ocean currents. Swimming objects are additionally transported by a certain percentage of the wind velocity. Further, in oil drift simulations the physical behavior of the different oil classes on the water surface or in the water column is considered.

Abbildung 5: Anlandung Öl-Teilchen (in schwarz) , rot Wind
Simulation of an oil spreading: oil particles black, wind red arrows

The Lagrangian model is predominantly used to support the coast guard in recent marine pollutions. It is also possible to perform drift predictions for floating persons or objects (ships, loading gone overboard, etc.) with this model as well as drift and dispersion simulations for oil and water solvable chemicals. Further the model is often used to determine the origin of substances. It is therefore an important mean for identifying possible polluters.
The latest version of the Lagrangian drift model is called Seatrack Web.

Overview dispersion models       Overview operational models

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